[Numpy-discussion] Who will use numpy.ma?
oliphant.travis at ieee.org
Thu Jan 12 16:47:02 CST 2006
Joris De Ridder wrote:
>>>>y = array([1, nan, 0.47])
>array([ 1. , nan, 0.47 ])
>No exception, no sorting. Is this a feature or a bug? :)
It's a "problem" that the user needs to be aware of, but I'm not sure
how to fix.
Notice that the same problem exists with python
The problem may be that nans are always False on comparison with another
object and this ends up confusing the sort functions.
To fix it we would have to write a special nan-sort or else remove the
nans entirely, but I don't think we should check for nans for every sort
of floating-point values, because it would be slower. So, the user
needs to do that.
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